JP7300970B2 - 基板処理方法及び基板処理装置 - Google Patents
基板処理方法及び基板処理装置 Download PDFInfo
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- JP7300970B2 JP7300970B2 JP2019209033A JP2019209033A JP7300970B2 JP 7300970 B2 JP7300970 B2 JP 7300970B2 JP 2019209033 A JP2019209033 A JP 2019209033A JP 2019209033 A JP2019209033 A JP 2019209033A JP 7300970 B2 JP7300970 B2 JP 7300970B2
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- gas
- substrate processing
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- silicon
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- 238000012545 processing Methods 0.000 title claims description 101
- 239000000758 substrate Substances 0.000 title claims description 47
- 238000003672 processing method Methods 0.000 title claims description 11
- 239000007789 gas Substances 0.000 claims description 198
- 239000012495 reaction gas Substances 0.000 claims description 23
- 238000010926 purge Methods 0.000 claims description 19
- 238000001179 sorption measurement Methods 0.000 claims description 18
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 13
- 238000012986 modification Methods 0.000 claims description 13
- 230000004048 modification Effects 0.000 claims description 13
- 239000010703 silicon Substances 0.000 claims description 13
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 4
- VOSJXMPCFODQAR-UHFFFAOYSA-N ac1l3fa4 Chemical compound [SiH3]N([SiH3])[SiH3] VOSJXMPCFODQAR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 150000002429 hydrazines Chemical class 0.000 claims description 2
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002243 precursor Substances 0.000 description 42
- 238000000034 method Methods 0.000 description 24
- 235000012431 wafers Nutrition 0.000 description 23
- 230000015572 biosynthetic process Effects 0.000 description 12
- 238000002407 reforming Methods 0.000 description 11
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 9
- 238000003860 storage Methods 0.000 description 9
- 238000005121 nitriding Methods 0.000 description 8
- 229910007991 Si-N Inorganic materials 0.000 description 7
- 229910006294 Si—N Inorganic materials 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 230000003028 elevating effect Effects 0.000 description 5
- 238000011144 upstream manufacturing Methods 0.000 description 5
- 238000000231 atomic layer deposition Methods 0.000 description 3
- 238000001039 wet etching Methods 0.000 description 3
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000005192 partition Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
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-
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Description
本実施例に係る基板処理装置101について、図1を用いて説明する。図1は、基板処理装置101の構成例を示す概略図である。基板処理装置101は、減圧状態の処理容器内でPE-ALD(Plasma Enhanced Atomic Layer Deposition)法によりSiN膜を形成する。
基板処理装置101の動作の一例について、図2を用いて説明する。図2は、本実施例に係る基板処理装置101における動作の一例を示すタイムチャートである。基板処理装置101は、下地膜が形成されたウエハWに、PE-ALDプロセスによりSiN膜を成膜する。
温度:250~600℃
圧力:0.5~10Torr
DCSガス流量:10~100cc/サイクル
NH3ガス流量:500~10000sccm
Heガス流量:100~10000sccm
Arガス流量:500~10000sccm
工程S201時間:0.05~2.0秒
工程S202時間:0.1~2.0秒
工程S203時間:0.0~2.0秒
工程S204時間:1.0~6.0秒
工程S205時間:0.0~2.0秒
工程S206時間:0.5~2.0秒
工程S207時間:1.0~6.0秒
工程S208時間:0.1~2.0秒
改質時(S204)のRFパワー:10~1000W
窒化時(S207)のRFパワー:50~1000W
W ウエハ
1 処理容器
2 載置台
3 シャワーヘッド
4 排気部
5 ガス供給機構(ガス供給源)
51a プリカーサガス供給源
52a 反応ガス供給源
53a Arガス供給源
54a Arガス供給源
55a Heガス供給源
8 RF電力供給部(高周波電力供給部)
83 高周波電源
9 制御部
Claims (8)
- シリコン含有ガスを供給して基板上に吸着層を形成する工程と、
Heを含むプラズマを生成して改質する工程と、
反応ガスのプラズマを生成して前記吸着層と反応させる工程と、をこの順で繰り返して、シリコン含有膜を形成する、基板処理方法。 - 前記吸着層を形成する工程と、前記改質する工程と、の間に、
前記シリコン含有ガスをパージする工程を含む、
請求項1に記載の基板処理方法。 - 前記改質する工程は、
Heイオン、Heラジカル、Heを含むプラズマの発光のうち、少なくとも何れか一つを前記吸着層に照射して改質する、
請求項1または請求項2に記載の基板処理方法。 - 前記改質は、
前記シリコン含有膜のエッチング耐性を向上させる、
請求項1乃至請求項3のいずれか1項に記載の基板処理方法。 - 前記シリコン含有膜は、SiN膜である、
請求項1乃至請求項4のいずれか1項に記載の基板処理方法。 - 前記シリコン含有ガスは、DCSガス、SiH4ガス、TSA(trisilylamine)ガス、ハロゲンを含むシリコン系ガス、アミノシランガスのうち、少なくとも何れか一つを含む、
請求項1乃至請求項5のいずれか1項に記載の基板処理方法。 - 前記反応ガスは、NH3ガス、N2ガス、ヒドラジン、ヒドラジン誘導体ガスのうち、少なくとも何れか一つを含む、
請求項1乃至請求項6のいずれか1項に記載の基板処理方法。 - 基板を載置する載置台を有する処理容器と、
前記処理容器にガスを供給するガス供給源と、
高周波電力を印加して前記処理容器内にプラズマを生成する高周波電力供給部と、
制御部と、を備え、
前記制御部は、
シリコン含有ガスを供給して基板上に吸着層を形成する工程と、
Heを含むプラズマを生成して改質する工程と、
反応ガスのプラズマを生成して前記吸着層と反応させる工程と、をこの順で繰り返して、シリコン含有膜を形成する、
基板処理装置。
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US17/756,094 US20220403515A1 (en) | 2019-11-19 | 2020-11-12 | Substrate treatment method and substrate treatment device |
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